the change met the technical requirements of thenew age by engaging a large professional elementand prevented the decline in efficiency that socommonly spoiled the fortunes of family firms in thesecond and third generation after the energeticfounders.
    譯文：這種變革通過聘用大量專業(yè)人員來適應(yīng)新時(shí)代的技術(shù)要求，并阻止了效率的降低，這種效率的降低使得許多家族商行在那些精力充沛的創(chuàng)業(yè)者之后的第二代、第三代手中破產(chǎn)倒閉。
    點(diǎn)睛：句子的主干是the change met... requirements... and prevented the decline.。其中byengaging a large professional element是介詞短語作狀語，說明met the technical requirementsof the new age的方式。that引導(dǎo)的是定語從句，修飾前面的decline in efficiency.